An electron-insulating Li2O protection layer endowing a Li-Cu-Zn ternary alloy composite anode with high performance

Linyun Yi; Zihao Wang; Xiaoxiao Chen; Jianxiong Xing; Hao Huang; Chaohui Wei; Qiang Zhao; Aijun Zhou; Jingze Li

doi:10.1039/d4cc00933a

An electron-insulating Li₂O protection layer endowing a Li-Cu-Zn ternary alloy composite anode with high performance

Chem Commun (Camb). 2024 May 30;60(45):5832-5835. doi: 10.1039/d4cc00933a.

Authors

Linyun Yi^{1

2}, Zihao Wang^{1

2}, Xiaoxiao Chen^{1

2}, Jianxiong Xing^{1

2}, Hao Huang^{1

2}, Chaohui Wei², Qiang Zhao^{1

2}, Aijun Zhou^{1

2}, Jingze Li^{1

2}

Affiliations

¹ School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, P. R. China. lijingze@uestc.edu.cn.
² Huzhou Key Laboratory of Smart and Clean Energy, Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou 313001, P. R. China.

PMID: 38747248
DOI: 10.1039/d4cc00933a

Abstract

We report an electron-insulating layer of Li₂O nanoparticles passivating a Li-rich Li-Cu-Zn ternary alloy as an advanced Li anode. The insulating layer ensures Li deposition below the top protective layer and inhibits side reactions effectively. Additionally, the ternary alloy framework offers superior lithiophilicity and robust mechanical stability. Galvanostatic measurements demonstrate a prolonged lifespan of symmetric cells for over 1200 h at 1 mA cm^-2 and 1 mA h cm^-2.